Sure, here’s one example: www.coderbyte.com/CodingArea/Results.php?ct=Array%20Addition%20I&user=Redmanter&lan=Java
This code should have failed for two reasons: it adds all remaining numbers, failing the example case, and it returns true even if the sum exceeds the max value.
Looking through other submissions I came across this one: www.coderbyte.com/CodingArea/Results.php?ct=Array%20Addition%20I&user=synapse123&lan=Java
Note that it took 1 minute to write a non-trivial recursive function. This user clearly re-did the challenge and pasted the finished code. I'm sure everyone writes and tests the code on their own terminals or IDEs and then paste the finished code (this is necessary because the site does not provide compiler output) but I'm also sure (or hope) that most don't redo the challenges to cheat the time limit. One solution would be to disable the paste event, but this is not an option until compiler output is shown.
Also, when looking at another user’s code tests cannot be run, it returns “Error: Main method not found in class Function, please define the main method as: public static void main(String args)”
I really like the site and the idea, I hope you find the time to fix these problems! :)